Finding the Fourth Proportional to 20,299,514.87, 28,010,749.30 and 11,598,251.06
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Solution
The fourth proportional to 20,299,514.87, 28,010,749.30 and 11,598,251.06 is: 16,004,111.66
Step by Step Solution
- Step 1: Write the proportion equation
20,299,514.87 : 28,010,749.30 = 11,598,251.06 : x - Step 2: Convert to fraction form
20,299,514.87/28,010,749.30 = 11,598,251.06/x - Step 3: Cross multiply
20,299,514.87x = 28,010,749.30 × 11,598,251.06 - Step 4: Simplify right side
20,299,514.87x = 324,875,702,591,069.88 - Step 5: Solve for x
x = 324,875,702,591,069.88/20,299,514.87 - Step 6: Final answer
x = 16,004,111.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.